231624125 has 16 divisors (see below), whose sum is σ = 290594928. Its totient is φ = 184320000.

The previous prime is 231624121. The next prime is 231624143. The reversal of 231624125 is 521426132.

It is a happy number.

It can be written as a sum of positive squares in 8 ways, for example, as 72914521 + 158709604 = 8539^2 + 12598^2 .

It is not a de Polignac number, because 231624125 - 2² = 231624121 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 231624094 and 231624103.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (231624121) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 19325 + ... + 28925.

It is an arithmetic number, because the mean of its divisors is an integer number (18162183).

Almost surely, 2^231624125 is an apocalyptic number.

231624125 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

231624125 is a deficient number, since it is larger than the sum of its proper divisors (58970803).

231624125 is an equidigital number, since it uses as much as digits as its factorization.

231624125 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9809 (or 9799 counting only the distinct ones).

The product of its digits is 2880, while the sum is 26.

The square root of 231624125 is about 15219.2025086730. The cubic root of 231624125 is about 614.1313446479.

The spelling of 231624125 in words is "two hundred thirty-one million, six hundred twenty-four thousand, one hundred twenty-five".